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From: Christopher Bostic <cbostic@linux.vnet.ibm.com>
To: joel@jms.id.au, jk@ozlabs.org
Cc: Christopher Bostic <cbostic@linux.vnet.ibm.com>,
	openbmc@lists.ozlabs.org
Subject: [PATCH linux dev-4.10 v2 1/3] dt-bindings: fsi: Add optional property no-scan-on-init
Date: Thu,  3 Aug 2017 22:26:20 -0500	[thread overview]
Message-ID: <20170804032622.88674-2-cbostic@linux.vnet.ibm.com> (raw)
In-Reply-To: <20170804032622.88674-1-cbostic@linux.vnet.ibm.com>

Add an optional FSI master property 'no-scan-on-init.  This
can be specified to indicate that a master should not be
automatically scanned at init time.  This is required in cases
where a scan could interfere with another FSI master on the same
bus.

Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>
---
 Documentation/devicetree/bindings/fsi/fsi.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/fsi/fsi.txt b/Documentation/devicetree/bindings/fsi/fsi.txt
index 4eaf488..ab516c6 100644
--- a/Documentation/devicetree/bindings/fsi/fsi.txt
+++ b/Documentation/devicetree/bindings/fsi/fsi.txt
@@ -56,6 +56,13 @@ addresses (link index and slave ID), and no size:
     #address-cells = <2>;
     #size-cells = <0>;
 
+An optional boolean property can be added to indicate that a particular master
+should not scan for connected devices at initialization time.  This is
+necessary in cases where a scan could cause arbitration issues with other
+masters that may be present on the bus.
+
+    no-scan-on-init;
+
 FSI slaves
 ----------
 
-- 
1.8.2.2

  reply	other threads:[~2017-08-04  3:26 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-04  3:26 [PATCH linux dev-4.10 v2 0/3] Add FSI master scan conditional Christopher Bostic
2017-08-04  3:26 ` Christopher Bostic [this message]
2017-08-04  3:26 ` [PATCH linux dev-4.10 v2 2/3] ARM: dts: fsi: Add optional master property no-scan-on-init Christopher Bostic
2017-08-04  3:26 ` [PATCH linux dev-4.10 v2 3/3] fsi: core: Add check for " Christopher Bostic
2017-08-04  3:33   ` Jeremy Kerr
2017-08-08 13:02     ` Joel Stanley

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